| 1. Identity statement | |
| Reference Type | Journal Article |
| Site | mtc-m16.sid.inpe.br |
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
| Repository | sid.inpe.br/marciana/2004/12.10.12.55 (restricted access) |
| Last Update | 2004:12.10.02.00.00 (UTC) administrator |
| Metadata Repository | sid.inpe.br/marciana/2004/12.10.12.55.58 |
| Metadata Last Update | 2021:02.11.18.10.21 (UTC) administrator |
| Secondary Key | INPE-11808-PRE/7162 |
| ISSN | 0094-5765 |
| Citation Key | FonsecaBainSant:2004:CPTiCo |
| Title | CPU time consideration for LSS structural/control optimization models with different degrees of freedom  |
| Year | 2004 |
| Month | feb. |
| Access Date | 2024, Apr. 28 |
| Secondary Type | PRE PI |
| Number of Files | 1 |
| Size | 187 KiB |
| 2. Context | |
| Author | 1 Fonseca, Ijar Milagre da 2 Bainum, P. M. 3 Santos, M. C. |
| Resume Identifier | 1 8JMKD3MGP5W/3C9JHD8 |
| Group | 1 DMC-INPE-MCT-BR |
| Affiliation | 1 Fonseca IM (reprint author), INPE, Natl Inst Space Res, Space Mech & Control Div, DMC, Avenida Astronautas,1758,POB 515, Sao Jose Dos Campos, SP BR-12201940 Brazil 2 INPE, Natl Inst Space Res, Space Mech & Control Div, DMC, Sao Jose Dos Campos, SP BR-12201940 Brazil 3 Howard Univ, Dept Mech Engn, Washington, DC 20059 USA |
| Journal | Acta Astronautica |
| Volume | 54 |
| Number | 4 |
| Pages | 259-266 |
| History (UTC) | 2004-12-16 13:47:05 :: sergio -> administrator :: 2006-09-28 22:28:33 :: administrator -> sergio :: 2008-01-07 12:53:42 :: sergio -> administrator :: 2008-06-10 22:28:33 :: administrator -> marciana :: 2011-12-12 11:42:09 :: marciana -> administrator :: 2004 2021-02-11 18:10:21 :: administrator -> marciana :: 2004 |
| 3. Content and structure | |
| Is the master or a copy? | is the master |
| Content Stage | completed |
| Transferable | 1 |
| Content Type | External Contribution |
| Version Type | publisher |
| Abstract | This paper focuses on the CPU time investigation when solving an integrated structural/control optimization problem of a large space structure (LSS) subjected to the gravity-gradient torque. The solution of this integrated optimization problem requires sensitivity analysis implying computing the derivatives of the constraints imposed on the optimization problem with respect to the design variables. These derivatives can be obtained by the finite difference approach. However, this procedure may result in a significant consumption of computer time. Depending on the problem complexity the computational cost may become prohibitive. This fact motivates studies to develop semi-analytical formulations so that these derivatives are obtained analytically. However, how much would be the CPU time consumption associated with the accuracy of mathematical models for the optimization problem referred above? This paper tries to clarify this point by solving the integrated structural/control problem for models starting from models derived from a few to several finite elements (FEM). The results show that the CPU time increases exponentially with the numbers of FEM and really becomes prohibitive, at least for the PC CPU Pentium II, 750 MHz, 120 Mbyte memory used to solve the integrated structural/control optimization problem under study in this paper. (C) 2003 Elsevier Ltd. All rights reserved. |
| Area | ETES |
| Arrangement | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > DIDMC > CPU time consideration... |
| doc Directory Content | access |
| source Directory Content | there are no files |
| agreement Directory Content | there are no files |
| 4. Conditions of access and use | |
| Language | en |
| Target File | cpu time.pdf |
| User Group | administrator marciana sergio |
| Visibility | shown |
| Copy Holder | SID/SCD |
| Archiving Policy | denypublisher denyfinaldraft24 |
| Read Permission | deny from all and allow from 150.163 |
| Update Permission | not transferred |
| 5. Allied materials | |
| Next Higher Units | 8JMKD3MGPCW/446AF4B |
| Dissemination | WEBSCI; PORTALCAPES; COMPENDEX. |
| Host Collection | sid.inpe.br/banon/2003/08.15.17.40 |
| 6. Notes | |
| Empty Fields | alternatejournal archivist callnumber copyright creatorhistory descriptionlevel doi e-mailaddress electronicmailaddress format identifier isbn keywords label lineage mark mirrorrepository nextedition notes orcid parameterlist parentrepositories previousedition previouslowerunit progress project readergroup rightsholder schedulinginformation secondarydate secondarymark session shorttitle sponsor subject tertiarymark tertiarytype typeofwork url |
| 7. Description control | |
| e-Mail (login) | marciana |
| update | |